Tracing The Moon’s Origins

Some new thinking may have brought astronomers a step closer to solving the mystery of how our moon formed. Researchers have long believed that the moon was cleaved from a Mars-sized planet that collided with Earth some 4.5 billion years ago. Yet recent tests of lunar rock samples suggest that the moon’s chemical makeup is too similar to Earth’s to […]

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Megadrought may grip the Southwest

Megadrought

The Southwest and central Great Plains are likely to be hit in coming decades by the most prolonged megadrought in more than 1,000 years, a new climate study predicts. Scientists from NASA, Columbia University, and Cornell University created a long-term climate model after analyzing historical temperature records, carbon dioxide emissions, and drought trends from tree rings.The record shows that the […]

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The sun takes a rare hiatus

Sunspot activity may be entering a lull for the first time in almost 400 years, offering scientists a rare chance to gauge how solar conditions affect Earth’s climate. “This is highly unusual and unexpected” says Frank Hill, a researcher at the National Solar Observatory. Three new NSO studies suggest that the sun’s fluctuating magnetic field may soon become too weak […]

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Reef madness

It seemed like a good idea at the time. In 1972, Broward County, Fla., organized more than 100 boats to dump an estimated 700,000 tires into the Atlantic Ocean in hopes of sparking the growth of an artificial reef. Ultimately corals never grew on the bundles of tires, and over time the bundles became loose, causing damage to nearby natural […]

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The big melt: Antarctica’s retreating ice could re-shape Earth

CAPE LEGOUPIL, ANTARCTICA: From the ground in this extreme northern part of Antarctica, spectacularly white and blinding ice seems to extend forever. What can’t be seen is the battle raging thousands of feet below to re-shape Earth. Water is eating away at the Antarctic ice, melting it where it hits the oceans. As the ice sheets slowly thaw, water pours […]

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Antarctica team uncovers century-old artefacts from Douglas Mawson hut

An expedition team in Antarctica has successfully cleared away layers of thick ice from inside the hut of the famous Australian explorer Sir Douglas Mawson, revealing a century-old frozen bowl of peas, books on the shelves, candles, matches and “old-style woolen underwear”. The team used picks and chainsaws to remove the ice that had filled the main living quarters used […]

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Warming oceans killing coral reefs

Coral reefs around the world are experiencing a massive die-off that could be the worst in recorded history, a new study warns. Stoked by climate change and a powerful El Nino, record-high ocean temperatures have triggered the global event, which began last year and is expected to destroy 5 percent of the world’s coral reefs by 2016. The temperature changes […]

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